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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
reason for seasonal breeding periods
seminiferous tubules
2. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
Grading choice
Sperm growth rate
why does the cow need fat deposits during pregnancy?
3. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
reasons for castration
things to check for in a breeding soundness exam (BSE)
mare estrus
what has to happen for males for copulation to occur
4. 16-20 hours
cowper's gland
Size of cow in relation to the amount of milk produced
monestrous
cow estrus
5. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
what has to happen for males for copulation to occur
prostate gland
retractor muscles
organs used in spermatogenesis
6. 1. brain function - 2. blood flow - 3. willing female
Sperm growth rate
what has to happen for males for copulation to occur
cremaster muscle
estrous
7. Way to know everything is alright with the breeding male
eminal vesicles
purpose of Breeding Soundness Exam (BSE) for males
mare's estrous cycle
epididymis: definition - 3 parts - 4 functions
8. What makes the milk flow through the mammary glands?
sow estrus cycle
mare gestation
scrotal circumference (BSE)
Blood
9. Why does estrus happen before ovulation?
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
ewe estrus
effects of BST
seminiferous tubules
10. (male) pushes the testes upward toward the body for warmth or protection
testis (gonads)
Lutinizing Hormone in males
dartos muscle
prostate gland
11. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
things to check for in a breeding soundness exam (BSE)
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Lutinizing Hormone in females
hormones
12. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
scrotal circumference (BSE)
sertoli cells
monorchid
Dairy Cattle milking schedule
13. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm
sow ovulation
Reasons for gestation length being affected
Follical Stimulating in males
effects of estrogen
14. (switzerland) 2nd in size and milk production - most muscle -
dry matter and water
libido test (BSE)
Brown Swiss Cow
1. more cost effective - 2. powdered milk is in excess production
15. Male on one pin and female on other side
libido test (BSE)
testis (gonads)
hormones
leydid or interstitial cells
16. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
accessory sex glands
colostrum
hypothalamus and pituitary gland
burdizzo
17. Actual heat cycle (period)
testosterone
penis proper
age and castration
estrus
18. When are dairy cattle dehorned?
Hormones from both the fetus and the mom.
Blood
~1 month
eminal vesicles
19. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
Avg. bull specs
Follical Stimulating in males
rectal palpation (BSE)
functions of progestrone
20. 24 hours before end of estrus cycle
mare ovulation
effects of estrogen
Sperm growth rate
burdizzo
21. 10-37 (21) days
Dairy Cattle Gestation
sperm cell
sperm cell
mare estrus cycle
22. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
elastrator
mare gestation
what has to happen for males for copulation to occur
prostate gland
23. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
Blood
Hormones from both the fetus and the mom.
Brown Swiss Cow
behavioral signs of estrus
24. Animals which have many estrous periods per year (ex: cow - sow)
Dairy calves are removed from cow at birth to...
urethra
polyestrous
reasons for castration
25. Important 'landmark' during palpation
sow gestation
hypothalamus and pituitary gland
cervix
retractor muscles
26. 14-19 (17) days
Dairy calves are removed from cow at birth to...
hypothalamus and pituitary gland
ewe estrus cycle
dry matter and water
27. What about the sperm for a bull which has been castrated but still has testicles?
Dairy calves are removed from cow at birth to...
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
rectal palpation (BSE)
age and castration
28. Not under a timeline - cow can not be sold as steak
Grading choice
epididymis: definition - 3 parts - 4 functions
cremaster muscle
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
29. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)
sertoli cells
growth lost from castration methods (knife & band)
estrous
ewe gestation
30. What makes the milk flow through the mammary glands?
Follical Stimulating in females
Blood
ewe's estrous cycle
dartos muscle
31. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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32. (LH) causes female's egg to break (her period)
penis sizes vs delivering methods
Lutinizing Hormone in females
vulva
Where livelihood is in agriculture
33. The more stressed out the male is - the less sperm he is going to produce
6-8 weeks
why does the cow need fat deposits during pregnancy?
dry matter and water
humans: stress level vs sperm
34. 336 days
normal presentation of the fetus
mare gestation
Bull's fibro-elastic penis
reasons for castration
35. Help to signal hormone levels which we need both in the brain right next to each other.
monorchid
reason for seasonal breeding periods
hypothalamus and pituitary gland
sow gestation
36. 19-23 (21) days
sow estrus cycle
age and castration
cryptorchid
Reasons for gestation length being affected
37. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
dartos muscle
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Jersey Cow
Lutinizing Hormone in males
38. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
sow ovulation
ewe ovulation
Dairy calves are removed from cow at birth to...
Reasons for gestation length being affected
39. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.
why does the cow need fat deposits during pregnancy?
testis (gonads)
functions of progestrone
pelvis
40. Look for infection - split - and rupture of the penis
penis and prepuce observation (BSE)
ewe ovulation
penis proper
cow ovulation
41. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells
cryptorchid
mare's estrous cycle
organs used in spermatogenesis
kidney stones also called ________ ___________ can develop in the sigmoid flexure
42. The more stressed out the male is - the less sperm he is going to produce
humans: stress level vs sperm
mare gestation
Sperm growth rate
elastrator
43. 1-3 days
accessory sex glands
sow estrus cycle
sow estrus
Mares
44. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
Hormones from both the fetus and the mom.
estrous
oviducts
burdizzo
45. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers
Where livelihood is in agriculture
cow estrus cycle
sow gestation
dry-off time in dairy cattle
46. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
Hormones from both the fetus and the mom.
testosterone
hormones
dartos muscle
47. FEED
6-8 weeks
monestrous
#1 cost in production
feeding a high producing dairy cow
48. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg
Grading choice
mare ovulation
rectal palpation (BSE)
sperm cell
49. Sperm is produced here
Dairy calves are removed from cow at birth to...
seminiferous tubules
Where livelihood is in agriculture
burdizzo
50. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
behavioral signs of estrus
cervix
reasons for castration
Where livelihood is in agriculture